Power transmission.



S. HUGHES.

POWER TRANSMISSION.

APPLICATION FILED MAY 19, 1910.

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POWER TRANSMISSION.

APPLICATION IILBD MAY 19, 1910.

Patented Aug. 20, 1912.

2 SHEETS-SHEET Z.

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UNITED STATES PATENT OFFICE.

SAMUEL HUGHES, OF LINDSAY, ONTARIO, CANADA.

@OWER TRANSMISSION.

Specification 01' Letters Patent.

Application filed May 19, 1910. Serial No. 562,202.

gear speed clutches, reduce the amount of gearing to a minimum and do away with brakes, lubrication and friction chalns or other forms of drive now commonly in use.

A further object is to makethe control extremely simple and easy to operate, and practically noiseless.

Further objects are to eliminate friction and all moving parts between the engine shaft and main axle.

To eflect these objects I have constructed and arranged my invention with a main engine shaft, pumps driven therefrom, a main axle, motors thereon and tubular connec-v tions between the motors and the pumps, both for go-ahead and reverse movements 'of the car. as hereinafter more particularly explained.

Figure 1, is. a plan view of my improved driving ear. Fig. 2, is a section through one of t e motors. Fig. 3, is across section through one of the motors. Fig. 4 is a sectional plan of the valve. Fig. 5 1s a sectional view on the line wy Fig. 4: Fig. 6 is a sectional view on line :v3 Fig. 4. Fig. 7 is a side elevation of the valve partially broken away and in section. Fig. 8 is a front elevation of the valve.

In the drawings like letters of reference indicate correspondin parts in each figure.'

A is the chassis, w ich may be made of any suitable style depending on the location and arrangement of the arts.

B is the main engine s aft and C the engine, which may be of any suitable type.

B are thepumpsfwhmh maybe. of any suitable centrifugal type preferably of the style disclosed in the application filed May 19,1910, for high pressure rotary pumps, Serial Number 562,201.

D are the motors. D is the casing thereof, D. the inlet (see Fig. 2) and D the discharge or exhaust.

E are blades having substantially cylindrical pivotal pins E attached to or forming part of the same fitting in a corresponding recess in proximity to the periphery of the circular piston F, which is secured on the shaft G. The piston F is Patented Aug. 20,1912.

eccentrically placed in reference to the easing as clearly indicated in Fig. 2.

The casing D is provided with end grooves D in which ride the rollers E journaled on pins on the blades. The blades fit into recesses F inthe periphery 'of the piston F having a compound curvular inner contour. The inner side of the blade is correspondingly formed and provided with a projection E which limits the outer movement of the blades by comingincontact with the shoulder F. The major portion of the swinging end of the blade is concentric to the pivotal center of the blade and the outer end is provided with a shoulder E, which is adapted to fit into a corresponding recess F immediateliyl' outside of the shoulder F. A still furt er shoulder F is provided a ainst which the end of the tail E fits. Tl e outer face of the blade E is concentric to the center of rotation when it is in the closed position. The blade is caused to assume the various positions during rotation as clearly shown in the drawing, and is thereby impelled by the liquid passing through the plpe H into the inlet D The discharge tube or pipe I from the motor D passes backwardly again into the pump B.

The piston of the motor D is connected in each case to the divided axle G of the main divided axle, which carries the wheels G, at the outer end. The motor D is located at each end of the shaft G.

J is a two-wayvalve located at the juncture of the pipe H with the ipe K leading to the reversing motor L. The handles J of the valves are connected together by a cross rod J which is operated by a lever J a corresponding position.

M is a reservoir connected by the pipes M and branches M to the valve J opposite the 5 pipe K and by branches M to the valve J Simi -'45ervo1r. L

' a discharge pipe of thereversing mo-' opposite the pipe H. These pipes and res- 1ervoir are designed to take the pressure off the motors D or L when they are in operation- I The valve 0 serves to cut off communication with the motors allowing the pump to run idle when it is desired to stop the motors.

It will be understood that both the forward and reverse motors D and L respectively are secured to the same axle G. It will hus be seen that when the motor D is opera ing, the reversing motor will be carried around with the motor D and thus produce a back pressure in the pipe K. To overcome this, -I have provided the valves J into the casing of which the pipe K and H extend.

J is a channel way in the vale J connecting the two portions of the pi e H extending from each side of the valve J.

J is a branch of the channel J The channel J leads around the circumference of the "valve to a point on a level with the pi e K so as to register therewith when the va ve is turned.

- J 7 and J B are segmental channels designed to alternately connect the pipes M and M with the pipes K and H.

a It will thus be seen that when the motor D.

is driven, the back pressure caused by the reverse motion of motor L1 is relieved through the pipe K, segmenta passa e J, and ipes M and M to the reservo ir M.

Early when the motor L is the driving motor the motor D will be running in the reverse direction and the back pressure thereof will be relieved through the pipe H, channel J, pipe M and pipe M to the res- Nis I tor, whichconnects. with the pipe I.

i O are two-way valves provided with handles 0' and connected together by a rod 0, so :as to be operated simultaneously by r a lever 0'. The-valves O are connected by.

branch pi O to the pipe I. 'By throwing the rod in the opposite position to that shown in. the draw ng the motors D W111 5 5 not communicate any motion to the shaft G,

"H O and I back and through the pump but will establish a .circuit through the pipge s It will now be seen b operating the lever J g the forward motor be thrown into a circuit of the liquid may an thereby impelled to go forward or back :up. The amount of speed may be regulated by the lever 0 if the engine is maintained at a constant speed. If not it maybe reguor reverse 'motor L g lated by cutting down the speed of the engine or it may be regulated by both.

P is an equal zing pipe extending between the pipes H, and Q is an equalizing pipe extending between the pipes I. I The pipe Q is connected to the reservoirM by a branch Q. These pipes are designed to provide for the turning of the vehicle.

Although I describe with great particularity the various parts involved in my invention it will, of course, be understood that they are used simply as a means of exemplification or illustration, and that various changes may be made in detail without departing from the spirit of my invention.

What I claim as my invention is:

1. In apparatus of the class described the combination with the main axle and the driving or engine shaft, of a pair of rotary liquid pumps driven from the engine shaft, a pair of main and a pair of reversing liquid motors on the main axle suitable pipe connections between the pumps and the main and reversing motors,a reservoir intermediate of the motors, and means whereby the said reservoir may be connected to both main or reversing motors according to which is idle to relieve back pressure, substantially as described.

2. The combination with the main divided axle and the engine or driving shaft, of a pair of rotary liquid pumps on the engine motors on shaft, rota mam and reversin the axle,a ow pipe connection rom the delivery side of each pump having branches leading to the inlet side of the main and reversing motors respectively, return pipes connecting the outlet of the motors with the inlets of the pumps, a reservoir connected with said return pipes, pipe connections from said reservoir to. the junction of said branches with the flow pipes, and valves controlling such connection, substantially as described.

3. The combination with the main divided axle and the engine or shaft, of a pair of rotary liquid (pumps on the engine shaft, rota main an reversing motors on the axle, a ow pipe connection from the delivery slde of each ump having branches leading to the inlet side of the main and reversing motors respectively, return pipes connecting the outlet of the motors with the inlets of the pumps, a reservoir connected with said return pipes, pipe connections from said reservoir to the function of said branches with the flow pipes, and valves controlling such connection.

4. The combination with the" main divided axle and the en he or driving shaft, of a pair of rotary iquid pumps on the engine shaft, rotary main and reversing motors on the axle, a flow pipe connect1on from the delivery side of each pump having branches leading to the inlet side of the nection and also pipe connections from said main and reversing motors respectively, rereservolr to said return plpes.

turn pipes connecting the outlet of the mo- SAMUEL HUGHES tors with the inlets of the puinps, a reser- 5 voir, pipe connections from said reservoir Witnesses:

to the unction of said branches with the B. BOYD, flow pipes, and valves controlling such 'con- H. PRESTON. 

